Finding the Fourth Proportional to 13,561.57, 18,715.79 and 7,593.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,561.57 : 18,715.79 = 7,593.59 : x
2. Step 2: Convert to fraction form
   13,561.57/18,715.79 = 7,593.59/x
3. Step 3: Cross multiply
   13,561.57x = 18,715.79 × 7,593.59
4. Step 4: Simplify right side
   13,561.57x = 142,120,044.61
5. Step 5: Solve for x
   x = 142,120,044.61/13,561.57
6. Step 6: Final answer
   x = 10,479.62